OPIA4010ATU Equivalent & Substitute Parts

Part Overview

The OPIA4010ATU is a 5000Vrms isolation optoisolator with Darlington output configuration, manufactured by TT Electronics/Optek Technology. This component is designed for applications requiring high-voltage isolation in a compact 4-SMD surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

OPIA4010ATU

TT Electronics/Optek TechnologyIn Stock: 1146OPIA4010ATU Datasheet

Current PartRFQ

FOD852S

onsemiIn Stock: 12608FOD852S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OPIA4010ATU is determined by the following critical parameters:

• Isolation voltage rating of 5000Vrms or higher
• Single-channel Darlington output configuration
• Maximum output voltage capability of 300V or greater
• Maximum output current of 150mA or greater per channel
• 4-SMD surface mount package with gull wing leads
• Operating temperature range encompassing -30°C to 100°C

The FOD852S from onsemi meets all substitution criteria. Both parts share identical isolation voltage, channel count, output type, voltage/current ratings, package configuration, and operating temperature specifications. The FOD852S is currently in active production status, providing long-term availability for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The FOD852S is the direct substitute for the obsolete OPIA4010ATU. Selection is supported by:

• Active production status ensuring long-term availability and supply chain continuity
• Identical electrical and mechanical specifications across all critical parameters
• ROHS3 compliance certification on the FOD852S provides enhanced environmental and regulatory alignment
• Superior current transfer ratio performance (1000-15000% versus 600-9000%) offers improved operational margin
• Lower maximum Vce saturation (1.2V versus 1.5V) reduces power dissipation in output stage
• Identical isolation voltage, package configuration, and thermal operating range eliminate redesign requirements

Frequently Asked Questions (FAQ)

Q: Can FOD852S directly replace OPIA4010ATU in existing designs?

A: Yes. Both parts share identical isolation voltage (5000Vrms), channel configuration (1 channel), output type (Darlington), maximum voltage/current ratings (300V, 150mA), package type (4-SMD gull wing), and operating temperature range (-30°C to 100°C). No circuit modifications are required.

Q: What are the key differences between these parts?

A: The FOD852S offers superior performance characteristics: higher current transfer ratio (1000-15000% versus 600-9000%) and lower Vce saturation (1.2V versus 1.5V). The FOD852S is also in active production status, whereas the OPIA4010ATU is obsolete.

Q: Are there any compliance or certification differences?

A: Both parts carry identical REACH and ECCN classifications (REACH Unaffected, EAR99). The FOD852S includes ROHS3 compliance certification. Both have MSL rating of 1 (Unlimited).

Q: Is the 4-SMD gull wing package identical between both parts?

A: Yes. Both parts use the same 4-SMD surface mount package with gull wing lead configuration, allowing direct PCB footprint compatibility.

Q: What is the current transfer ratio specification, and why does it matter?

A: Current transfer ratio measures the ratio of output current to input current. The FOD852S minimum specification of 1000% (versus 600% for OPIA4010ATU) indicates more efficient optical coupling and provides greater design margin for signal transmission reliability.